The SZU 21-00 is an easy-to-use, practical aid for searching for and setting up SAT dishes. A satellite is selected from the list of 16 satellites saved on the device. When the corresponding satellite is found as the dish is rotated, the Sat Navi indicates this acoustically and via the LCD display. If a different satellite to the one that you are looking for is found, the name and position of this satellite can also be read on the LCD display.